Automobile-horn.



e. AfARNOLD,

AUTOMOBILE HORN. APPLICATION FILED 050.1. 1915.

1 1 9z,598; Patented July 25, 1916.

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G. A. ARNOLD.

AUTOMOBILE HORN.

APPLICATION FILED DEC. I, 1915.

1,192,598.. Patented July 25,1916.-

2 SHEETS-SHEET Z- WSP 9 W 61 M m: NORRIS Psrzks cm. WASHINGTON, a. c

GEORGE A. ARNOLD, OF BOSTON, MASSAC HUSETTS, ASSIGNOR OF TWO-THIR'DS TO SOLOMON A. CAMPBELL, OF WALTI-IAM, MASSACHUSETTS.

AUTOMOBILE-HORN.

Specification of Letters Patent.

Patented July 25, 1916.

Application filed December 1, 1915. Serial No. 64,397.

To all whom it may concern Be it known that I, GEORGE A. ARNOLD, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Automobile-Horns, of which the following is a specification.

This invention relates to certain improvements in pneumatically operated warning signals of a type particularly adapted for use on motor vehicles. In the common form of instruments of this character there is employed a bulb which, upon being compressed, forces the air past a reed or other vibratory sound producing member. Such instruments operate to give but a single signal for each compression of the bulb.

As an important feature of my invention, I provide air compressing means including a cylinder and a reciprocatory air compressing piston and connections to the sound producing mechanism whereby a warning signal or sound may be produced by a movement of said piston in ether direction and whereby two different sounds may be produced alternately and in rapid succession by the rapid reciprocation of said piston, both of the sounds being directed forwardly. This is preferably accomplished by a plurality of sound producing elements, one operating to produce one sound when the piston is moved in one direction and another operating to produce a different sound when said piston is moved in the opposite direction.

Various different embodiments of my invention may be designed and the various details may be changed within the spirit of my invention and without departing from the scope of the appended claims.

Reference is to be had to the accompanying drawings in which I have illustrated 7 two embodiments and in which similar reference characters indicate corresponding parts in the several views.

In these drawings, Figure 1 is a'central longitudinal section through a portion of a warning signal constructed in accordance with my invention; Fig. 2 is an end view of the form shown in Fig. 1; and Fig. 3 is a side View of a horn similar to that shown in Fig. 1, but operated by a motor.

In the specific form of horn shown in and 21 are provided Figs. 1 and 2, the air compressing means lncludes a cylinder 10 having cylinder heads 11 and 12 secured thereto in any suitable manner. Within the cylinder is a piston 13 provided with suitable gaskets whereby air may be put under compression in either end of the cylinder by a movement of the piston toward that end. The cylinder head 11 has an inlet port 14c controlled by a check valve 15 and has an outlet port 16 to which is connected a tube 17 leading to any suitable form of horn or resonator. The opposite head 12 of the cylinder has an inlet port 18 controlled by a let port 20 from which extends a tube 21 leading to a horn or resonator which'may be a different one from that to which the tube 17 is connected. WVithin the tubes 17 the two' sound producing members 22 and 23 which are here illustrated rather conventionally as reeds of the type used in connection with the ordinary bulb horn. These two reeds may in some cases be identical and serve to produce similar sounds, but preferably they are different in construction, size or proportions, so that by one will be of a the sound produced higher pitch than that produced by the check valve 19 and has an outother. The notes producedby the two sound 7 producing members may be at any predetermined distance apart in the musical scale so that the two notes will bear a predetermined musical relationship to each other, such for instance as making them an octave apart, or each may be selected without respect to the other.

It will be noted that when the piston 13 is moved in one direction, for instance toward the right hand from the position shown in Fig. l, the check valve 19 will be closed and the air in the right hand end of the cylinder will be forced through the outlet 20 while the'check valve 15 will open and air will be drawn into the left hand end of the cylinder. Upon reversing the direction of movement of the piston, the check valve 19 will open and air will be forced out through the tube 17. a

By rapidly reciprocating the piston, a substantially continuous delivery of air will be produced, first past one sound producing member and then past the other so that a substantially continuous sound will be produced of the same pitch or alternate high c or handle rocation of the piston,

piston as being provided with a piston rod illustrated as being pivoted intermediate its arm 26 rigid with the v ends on a bracket or and low pitch, dependent upon the character of the sound producing members. As a simple means for securing th s rapid recip- 24 extending. through the cylinder head 12 and connected to a'lever 25. The lGVQIlS One end ofthe'lever has alrnob cylinder.

27 which by the'operator while th'eopposite' end'is connected to the end of the pistonrod. 'Ihe I Connections between the lever and the piston rod, or the connections between the lever and the supporting bracket '26 include means for permitting the I 7 straight line. Merely as an example of such connection,

pistonrod to move in a I have illustrated the piston rod as being provided with ahead 28 with a transverse slot 29therein receivinga pin 30 carried by the lever adjacent its end. I do not wish to be limited to construction or for reciprocating the piston. 'The lever,

to this particular mechanism illustrated is one of the first class which permits the range of movement of the handle to be greater or less than the rangeof movement of the piston in accordance with the relative lengths of the lever portions at opposite sides of the fulcrum.

I have illustrated the inlets and outlets from the cylinder in the cylinder heads, but

it is of course evident that this specific location is not essential;

I fined in the claims.

In Fig. 3, I have shown a horn similar to that shown in Flg. l exceptin regard to certain detalls including the drlvlng mechanism. 7 Instead of reciprocating the piston rodby means of a hand lever, I have illusinections to an electric motor 35.

tratedon'e form of power transmitting con- The motor is illustrated as being supported on a bracket 36 connected to the cylinder head 11 al- I V though it is of course evidentthat the motor might be supportedor mounted in various different ways. The-bracket, or support 37,

I which I have illustrated serves as a means for securing the cylinder or air compression chamber to a part of a motor vehicle or any Q wheel 39.

other suitable supporting surface. The motor is illustrated as having a worm 38 on the armature shaft and meshing With a worm The worm wheel gaging in the slot 29 of the of the "piston rod. The head 28 is here shown as somewhat longer than the head shown in Fig. 1, but this length is dependent upon the eccentricityof the p'in'30 and the 4 length of the stroke of the piston. The motor is of a cylindrical high speedtype adapted to be operated from suitable dry cells or I have illustrated the may be readily grasped those shown in l and connected to in Fig. 3.

this specific stroke of the piston same sound mounted on The various other de- 7 tails which I have illustrated are not important except as they are pointed outand deters Patent is:

f posite ends and piston within said ton, and slot and has apin 30 entransverse head within said cylinder the, motor while running at normal high speed will reciprocate the. piston with sulficient rapidity to produce the sound. The worm wheel may be made comparatively heavy so as to have a certainfly wh l eff t' [if desired. I

The tubes 17 and 21 may each havea '3 sound producing membertherein(similar to the two may be thesame resonator 40 as shown If desired, only a single sound producing 'member may be employed and maybe positioned beyond the point of junction of'the two tubes 17 and '21 so that air discharged from the air compressing device upon either will pass through the producing device and a consubstantlally cont nuous, and

tinuous, ,or

uniform tone will be produced while the motor is running. The circuit of themotor may be closed by an ordinary push button the steeringwheel or in any other manner as is ated diaphragm horns.

I have shown the resonator of Fig. 3 as being substantially straightalthough it may be curved or coiled as employed in many common forms of bulb operated horns.

Having thus described my invention, what I claim as new and desire to secure by Let- 1. A warning having separate valve controlled inlets at opducing devices connected to said outlets, a cylinder adapted upon reciprocation to deliver air. alternately through said outlets to operate said sound I producing devices,

aobracket carried by said cylinder, a lever pivotally mounted on said bracket, a piston rod connected to said pispin connections between said piston rod and one end of said lever.

warning signal including a cylinder having separate valve controlled inlets at opposite ends and separate outlets at opposite.

ends, a tube extending lets lII lJlIG general direction of the axis of the cylinder, a tube extending from the other a of said outlets and including an elbow portion and a straight portion extending in the same general direction as said first mentioned tube, separate vibratory sound producing devices within said tubes, a piston and means for reciprocating said piston to deliver airpast' said signal including a cylinder I common in motor operg y separate outlets at opposite ends of said cylinder, vibratory sound profrom one of said out 7 sound producing devices alternately and deliver the sound from both in the same general direction.

8. A warning signal including a cylinder, a piston therein, separate valve controlled air inlets permitting the admission of air to said cylinder at either side of said piston, separate outlet tubes connected to opposite ends of said cylinder, one of said tubes including an elbow and both of said tubes extending in the same general direction and both including vibratory sound producing devices, a bracket rigid with said cylinder adjacent the upper side thereof and an upwardly extending lever pivoted intermediate of its ends on said bracket and having a handle at its upper end and connections at its lower end with said piston.

i. A warning signal including a cylinder, a piston therein, separate outlet tubes con- Gopies of this patent may be obtained for nected at opposite ends of said cylinder, vibratory sound producing mechanism operated by the delivery of air through said tubes, a bracket extending rearwardly from one end of said cylinder adjacent the upper side thereof and an upwardly extending lever, pivoted intermediate of its ends on said bracket and having its lower end connected to said piston, and its upper end presenting a handle whereby said piston may be reciprocated and the signal operated by the delivery of air through either of said tubes.

Signed at Waltham, in the county of Middlesex and State of Massachusetts, this 29th day of November, A. D. 1915.

GEORGE A. ARNOLD.

Witnesses:

NATHANIEL T. WILEY, IRA C. MOULTON.

five cents each, by addressing the Commissioner of Patents,

Washington, .D. G. 

